A common plant lipoxygenase that oxidizes linoleate and alpha-
linolenate, the two most common polyunsaturated fatty acids in
plants, by inserting molecular oxygen at the C(13) position with (S)-
configuration.

This enzyme produces precursors for several important compounds,
including the plant hormone jasmonic acid.

EC 1.13.11.58 catalyzes a similar reaction at the second available
position of these fatty acids.